.big_box{
    margin: 20px;
    font-size: 20px;
}
.child {
    margin-bottom: 20px; 
}
.child_box{
    height: 40px;
    display: flex;
    align-items: center;
    margin-bottom:10px ;
}
.input_box{
    background-color: #efefef;
    border:0px;
    color:rgb(0, 0, 0);
    width: 250px;
    height: 30px;
    font-size: 20px; 
}